Contact US

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

CCTV camera signal loss

CCTV camera signal loss

CCTV camera signal loss

Hello. I was curious if any of you can tell me the percent of degrade a digital CCTV camera will have over time. The reason behind my question is that I have a company that wants to replace my old cameras in a system to resolve dark site picture issues. It is my opinion that is only a short term solution and that the aging fiber-optic transmitter/receiver equipment should be replaced as well due to its ability to compensate for signal loss and over a distance. What do you think; I am crazy to think that a new digital CCTV signal will weaken over time?


RE: CCTV camera signal loss

The optics and the CCD chip in the camera will degrade over time.

Like any electronic component/system, the video to fiber conversion equipment will have some issues over time, but is not really subject to the same degredation as the camera optics.

In my experience, I have had more issues with old cameras degrading VS the fiber transport. The fiber transport usually works, or it doesn't.

I would say, if the entire system is being upgraded, it woudln't hurt to repalce the fiber converters. But... if the existing ones work, are compatable with the new cameras, and spares are still avaialble, I wouldnt take on the extra exspense if I didn't need to.

RE: CCTV camera signal loss

A more recent level of sensor technology will increase sensitivity to darkness (assuming that's the spec you're shooting for).  They're thinking in the right direction, but you have to make sure the new camera chosen actually has a better low-lux spec.  Degredation of the sensor in dark conditions, though?  Unlikely in your lifetime... at least not enough that you would notice it.

If the FO equipment is working (you're transmitting digital, not analog, so you're either receiving bits or you're not) and has the bandwidth you require, I see no need to replace it.

Dan - Owner

RE: CCTV camera signal loss

Depending on the application, there are plenty of cameras that have IR high-power LED illumination. The dark location remains visibly dark, but it is lit up by the IR LEDs.


RE: CCTV camera signal loss

Thank you all for your responses.  I will take this in to consideration.   I was under the impression that if the video signal starts to fail from the camera, then we could compensate that poor signal with the fiber-optic transmitter and further compensate at the receiver side.  Thanks again!   

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close